Comment 27 for bug 1736390

@Joseph - if you mean 2nd level so:
Machine
->KVM
  -> $ autopkgtest-buildvm-ubuntu-cloud -a i386 -r artful -s 10G
That could be an issue - for 2nd level being famous for only working mostly.

But why would you do so - since the tests are in VMs they are already more or less host release agnostic. You can run that on any host system - although in general having "autopkgtest" from $RELEASE-backports is often a good idea.

Just ran a check if buildvm works for me atm, and it did with the same cmdline you had (Xenial + autopkgtest backport) - it "appears" to hang at that stage, but is done after ~1-2 minutes. In 2nd level that could as well be just way more inefficient and take much longer?